Canon i-SENSYS MF729Cx Important Safety Instructions And Installation Manual page 620

＃839
A user name and password that are used for SMTP authentication are not set correctly.
Set the user name and password correctly.
Configuring Basic E-mail Settings
Configuring E-mail/I-Fax Communication Settings
＃841
When sending an e-mail, an encryption algorithm that is common to the mail server is not present.
Clear the [Use SSL] check box for both SMTP and POP servers.
Configuring E-mail/I-Fax Communication Settings
Add the common encryption algorithm to the mail server settings.
＃844
SSL encrypted communication to a POP server failed when sending an e-mail with POP before SMTP.
Check the SSL encrypted communication settings in the POP server.
Clear the [Use SSL] check box for the POP server. If the problem persists, clear the [Use POP Authentication Before
Sending] check box, and set the communication setting to a setting other than POP before SMTP.
Configuring E-mail/I-Fax Communication Settings
When verifying an SSL server certificate to communicate to the POP server, a verification error occurred.
Check that the CA certificate that signed the SSL server certificate on the POP server side is registered to the machine
by using the Remote UI.
Verifying Key Pairs and Digital Certificates
Check that the SSL server certificate on the POP server side is valid.
Check that the SSL server certificate is not a self-signed certificate.
＃846
An e-mail could not be sent due to a POP authentication failure.
Check the setting, and try again.
Configuring E-mail/I-Fax Communication Settings
＃852
The machine turns OFF for some reason.
Check whether the power plug is inserted into an outlet firmly.